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测定了新型萃取剂Ｃ２７２和Ｃ２７４的萃取稀土容量及其反萃取性能，进行了上述萃取剂串级萃取分离Ｔｍ／Ｙｂ和Ｙｂ／Ｌｕ的试验，确认Ｃ２７２和Ｃ２７４是萃取分离重稀土的优良萃取剂。
The extraction rare earth capacity and the stripping performance of the novel extractants C272 and C274 were measured. The above-mentioned extraction and tandem extraction of Tm / Yb and Yb / Lu were carried out. It was confirmed that C272 and C274 were excellent extractants for extraction and separation of heavy rare earths .